Large carnivores are critical to the balance of an ecosystem. In Yellowstone National Park in the western US, gray wolves keep elk populations at a healthy level. This prevents vegetation from being overgrazed and leads to taller woody plants which allow other species, such as beavers, to flourish.
Click here for original story, Reintroducing top predators to the wild is risky but necessary—here’s how we can ensure they survive
Source: Phys.org